Attachment of Acidithiobacillus ferrooxidans onto different solid substrates and fitting through Langmuir and Freundlich equations
Author
dc.contributor.author
Xia, Le Xian
Author
dc.contributor.author
Shen, Zhen
es_CL
Author
dc.contributor.author
Vargas Valero, Tomás
es_CL
Author
dc.contributor.author
Sun, Wen Juan
es_CL
Author
dc.contributor.author
Ruan, Ren Man
es_CL
Author
dc.contributor.author
Xie, Zhen Da
es_CL
Author
dc.contributor.author
Qiu, Guan Zhou
es_CL
Admission date
dc.date.accessioned
2014-01-07T14:09:31Z
Available date
dc.date.available
2014-01-07T14:09:31Z
Publication date
dc.date.issued
2013
Cita de ítem
dc.identifier.citation
Biotechnol Lett (2013) 35:2129–2136
en_US
Identifier
dc.identifier.other
DOI 10.1007/s10529-013-1316-1
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/125995
General note
dc.description
Artículo de publicación ISI
en_US
Abstract
dc.description.abstract
Attachments of Acidithiobacillus ferrooxidans
ATCC 23270 onto elemental sulfur, quartz and
complex chalcopyrite were investigated by analysis of
its extracellular polymeric substances as well as
applying Langmuir and Freundlich equations. The
two equations fitted the adsorption equilibrium data
with significant correlation coefficient over 0.9. This
indicated that bacterial attachment is complicated and
involves Langmuir and Freundlich characterizations.
Sulfur-grown cells showed the highest affinity for the
three solid substrates. The investigated complex
chalcopyrite possessed a higher maximum adsorption
capacity for A. ferrooxidans than elemental sulfur or
quartz. The Freundlich fitting parameters suggested
that quartz had a weaker adsorption capacity and
smaller adsorption areas than elemental sulfur or the
complex chalcopyrite. It is not the content of total
carbohydrates or proteins in EPS but their ratios that
determine the affinity differences between cells and
substrates.